Periodic Trends

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

Which group in the periodic table has the most reactive elements?

Back

Group 1 (Alkali metals) and Group 17 (Halogens) are the most reactive groups.

Front

What trend is observed in electronegativity across a period?

Back

Electronegativity increases across a period from left to right.

Front

What trend is observed in electronegativity down a group?

Back

Electronegativity decreases down a group.

Front

What is atomic radius?

Back

Atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

Front

What trend is observed in atomic radius across a period?

Back

Atomic radius decreases across a period from left to right.

Front

What trend is observed in atomic radius down a group?

Back

Atomic radius increases down a group.

Front

Which element has the largest atomic radius in Group 1?

Back

Francium (Fr) has the largest atomic radius in Group 1.

Front

Which halogen has the greatest electronegativity?

Back

Chlorine (Cl) has the greatest electronegativity among the halogens.

Front

What is the relationship between atomic size and reactivity in metals?

Back

In metals, larger atomic size generally leads to higher reactivity.